def build_resnet_block_ds(inputres, dim_in, dim_out, name="resnet", padding="REFLECT", norm_type=None, is_training=True, keep_rate=0.75):
with tf.variable_scope(name):
out_res = tf.pad(inputres, [[0, 0], [1, 1], [1, 1], [0, 0]], padding)
out_res = layers.general_conv2d(out_res, dim_out, 3, 3, 1, 1, 0.01, "VALID", "c1", norm_type=norm_type, is_training=is_training, keep_rate=keep_rate)
out_res = tf.pad(out_res, [[0, 0], [1, 1], [1, 1], [0, 0]], padding)
out_res = layers.general_conv2d(out_res, dim_out, 3, 3, 1, 1, 0.01, "VALID", "c2", do_relu=False, norm_type=norm_type, is_training=is_training, keep_rate=keep_rate)
inputres = tf.pad(inputres, [[0, 0], [0, 0], [0, 0], [(dim_out - dim_in) // 2, (dim_out - dim_in) // 2]], padding)
return tf.nn.relu(out_res + inputres)
def build_generator_resnet_9blocks(inputgen, name="generator", skip=False):
with tf.variable_scope(name):
f = 7
ks = 3
padding = "CONSTANT"
pad_input = tf.pad(inputgen, [[0, 0], [ks, ks], [ks, ks], [0, 0]],
padding)
o_c1 = layers.general_conv2d(pad_input,
ngf,
f,
f,
1,
1,
0.02,
name="c1")
o_c2 = layers.general_conv2d(o_c1, ngf * 2, ks, ks, 2, 2, 0.02, "SAME",
"c2")
o_c3 = layers.general_conv2d(o_c2, ngf * 4, ks, ks, 2, 2, 0.02, "SAME",
"c3")
o_r1 = build_resnet_block(o_c3, ngf * 4, "r1", padding)
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2", padding)
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3", padding)
o_r4 = build_resnet_block(o_r3, ngf * 4, "r4", padding)
o_r5 = build_resnet_block(o_r4, ngf * 4, "r5", padding)
o_r6 = build_resnet_block(o_r5, ngf * 4, "r6", padding)
o_r7 = build_resnet_block(o_r6, ngf * 4, "r7", padding)
o_r8 = build_resnet_block(o_r7, ngf * 4, "r8", padding)
o_r9 = build_resnet_block(o_r8, ngf * 4, "r9", padding)
o_c4 = layers.general_deconv2d(o_r9, [BATCH_SIZE, 128, 128, ngf * 2],
ngf * 2, ks, ks, 2, 2, 0.02, "SAME",
"c4")
o_c5 = layers.general_deconv2d(o_c4, [BATCH_SIZE, 256, 256, ngf], ngf,
ks, ks, 2, 2, 0.02, "SAME", "c5")
o_c6 = layers.general_conv2d(o_c5,
IMG_CHANNELS,
f,
f,
1,
1,
0.02,
"SAME",
"c6",
do_norm=False,
do_relu=False)
if skip is True:
out_gen = tf.nn.tanh(inputgen + o_c6, "t1")
else:
out_gen = tf.nn.tanh(o_c6, "t1")
return out_gen
def build_segmenternew(inputse, name='segmenter',keep_rate=0.75):
with tf.variable_scope(name):
f = 7
ks = 3
padding = "CONSTANT"
o_c1 = layers.general_conv2d(inputse, ngf * 4, ks, ks, 1, 1, 0.02, "SAME", "c1", norm_type='Ins',keep_rate=keep_rate)
o_r1 = build_resnet_block(o_c1, ngf * 4, "r1", padding, norm_type='Ins')
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2", padding, norm_type='Ins')
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3", padding, norm_type='Ins')
o_r4 = build_resnet_block(o_r3, ngf * 4, "r4", padding, norm_type='Ins')
o_c3 = layers.general_deconv2d(o_r4, [BATCH_SIZE, 64, 64, ngf * 2], ngf * 2, ks, ks, 2, 2, 0.02, "SAME", "c3", norm_type='Ins')
o_c4 = layers.general_deconv2d(o_c3, [BATCH_SIZE, 128, 128, ngf * 2], ngf * 2, ks, ks, 2, 2, 0.02, "SAME", "c4", norm_type='Ins')
o_c5 = layers.general_deconv2d(o_c4, [BATCH_SIZE, 256, 256, ngf], ngf, ks, ks, 2, 2, 0.02, "SAME", "c5", norm_type='Ins')
o_c6 = layers.general_conv2d(o_c5, 4, f, f, 1, 1, 0.02, "SAME", "c6", do_norm=False, do_relu=False)
return o_c6
def build_segmenter(inputse, name='segmenter', keep_rate=0.75):
with tf.variable_scope(name):
k1 = 1
o_c8 = layers.general_conv2d(inputse, 5, k1, k1, 1, 1, 0.01, 'SAME', 'c8', do_norm=False, do_relu=False, keep_rate=keep_rate)
out_seg = tf.image.resize_images(o_c8, (256, 256))
return out_seg
def build_resnet_block(inputres, dim, name="resnet"):
with tf.variable_scope(name):
out_res = tf.pad(inputres, [[0, 0], [1, 1], [1, 1], [0, 0]], "REFLECT")
out_res = general_conv2d(out_res, dim, 3, 3, 1, 1, 0.02, "VALID", "c1")
out_res = tf.pad(out_res, [[0, 0], [1, 1], [1, 1], [0, 0]], "REFLECT")
out_res = general_conv2d(out_res,
dim,
3,
3,
1,
1,
0.02,
"VALID",
"c2",
do_relu=False)
return tf.nn.relu(out_res + inputres)
def discriminator_tf(inputdisc, name="discriminator"):
with tf.variable_scope(name):
f = 4
o_c1 = layers.general_conv2d(inputdisc, ndf, f, f, 2, 2,
0.02, "SAME", "c1", do_norm=False,
relufactor=0.2)
o_c2 = layers.general_conv2d(o_c1, ndf * 2, f, f, 2, 2,
0.02, "SAME", "c2", relufactor=0.2)
o_c3 = layers.general_conv2d(o_c2, ndf * 4, f, f, 2, 2,
0.02, "SAME", "c3", relufactor=0.2)
o_c4 = layers.general_conv2d(o_c3, ndf * 8, f, f, 1, 1,
0.02, "SAME", "c4", relufactor=0.2)
o_c5 = layers.general_conv2d(
o_c4, 1, f, f, 1, 1, 0.02,
"SAME", "c5", do_norm=False, do_relu=False
)
return o_c5
def patch_discriminator(inputdisc, name="discriminator"):
with tf.variable_scope(name):
f = 4
patch_input = tf.random_crop(inputdisc, [1, 7, 7, 3])
o_c1 = layers.general_conv2d(patch_input, ndf, f, f, 2, 2,
0.02, "SAME", "c1", do_norm="False",
relufactor=0.2)
o_c2 = layers.general_conv2d(o_c1, ndf * 2, f, f, 2, 2,
0.02, "SAME", "c2", relufactor=0.2)
o_c3 = layers.general_conv2d(o_c2, ndf * 4, f, f, 2, 2,
0.02, "SAME", "c3", relufactor=0.2)
o_c4 = layers.general_conv2d(o_c3, ndf * 8, f, f, 2, 2,
0.02, "SAME", "c4", relufactor=0.2)
o_c5 = layers.general_conv2d(
o_c4, 1, f, f, 1, 1, 0.02, "SAME", "c5", do_norm=False,
do_relu=False)
return o_c5
def build_resnet_block(inputres, dim, name="resnet", padding="REFLECT"):
"""build a single block of resnet.
:param inputres: inputres
:param dim: dim
:param name: name
:param padding: for tensorflow version use REFLECT; for pytorch version use
CONSTANT
:return: a single block of resnet.
"""
with tf.variable_scope(name):
out_res = tf.pad(inputres, [[0, 0], [1, 1], [
1, 1], [0, 0]], padding)
out_res = layers.general_conv2d(
out_res, dim, 3, 3, 1, 1, 0.02, "VALID", "c1")
out_res = tf.pad(out_res, [[0, 0], [1, 1], [1, 1], [0, 0]], padding)
out_res = layers.general_conv2d(
out_res, dim, 3, 3, 1, 1, 0.02, "VALID", "c2", do_relu=False)
return tf.nn.relu(out_res + inputres)
def build_generator_resnet_9blocks(inputgen, name="generator"):
with tf.variable_scope(name):
f = 7
ks = 3
pad_input = tf.pad(inputgen, [[0, 0], [ks, ks], [ks, ks], [0, 0]],
"REFLECT")
o_c1 = general_conv2d(pad_input, ngf, f, f, 1, 1, 0.02, name="c1")
o_c2 = general_conv2d(o_c1, ngf * 2, ks, ks, 2, 2, 0.02, "SAME", "c2")
o_c3 = general_conv2d(o_c2, ngf * 4, ks, ks, 2, 2, 0.02, "SAME", "c3")
o_r1 = build_resnet_block(o_c3, ngf * 4, "r1")
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2")
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3")
o_r4 = build_resnet_block(o_r3, ngf * 4, "r4")
o_r5 = build_resnet_block(o_r4, ngf * 4, "r5")
o_r6 = build_resnet_block(o_r5, ngf * 4, "r6")
o_r7 = build_resnet_block(o_r6, ngf * 4, "r7")
o_r8 = build_resnet_block(o_r7, ngf * 4, "r8")
o_r9 = build_resnet_block(o_r8, ngf * 4, "r9")
o_c4 = general_deconv2d(o_r9, [batch_size, 128, 128, ngf * 2], ngf * 2,
ks, ks, 2, 2, 0.02, "SAME", "c4")
o_c5 = general_deconv2d(o_c4, [batch_size, 256, 256, ngf], ngf, ks, ks,
2, 2, 0.02, "SAME", "c5")
o_c6 = general_conv2d(o_c5,
img_layer,
f,
f,
1,
1,
0.02,
"SAME",
"c6",
do_relu=False)
# Adding the tanh layer
out_gen = tf.nn.tanh(o_c6, "t1")
return out_gen
def discriminator_aux(inputdisc, name="discriminator"):
with tf.variable_scope(name):
f = 4
padw = 2
pad_input = tf.pad(inputdisc, [[0, 0], [padw, padw], [padw, padw], [0, 0]], "CONSTANT")
o_c1 = layers.general_conv2d(pad_input, ndf, f, f, 2, 2, 0.02, "VALID", "c1", do_norm=False, relufactor=0.2, norm_type='Ins')
pad_o_c1 = tf.pad(o_c1, [[0, 0], [padw, padw], [padw, padw], [0, 0]], "CONSTANT")
o_c2 = layers.general_conv2d(pad_o_c1, ndf * 2, f, f, 2, 2, 0.02, "VALID", "c2", relufactor=0.2, norm_type='Ins')
pad_o_c2 = tf.pad(o_c2, [[0, 0], [padw, padw], [padw, padw], [0, 0]], "CONSTANT")
o_c3 = layers.general_conv2d(pad_o_c2, ndf * 4, f, f, 2, 2, 0.02, "VALID", "c3", relufactor=0.2, norm_type='Ins')
pad_o_c3 = tf.pad(o_c3, [[0, 0], [padw, padw], [padw, padw], [0, 0]], "CONSTANT")
o_c4 = layers.general_conv2d(pad_o_c3, ndf * 8, f, f, 1, 1, 0.02, "VALID", "c4", relufactor=0.2, norm_type='Ins')
pad_o_c4 = tf.pad(o_c4, [[0, 0], [padw, padw], [padw, padw], [0, 0]], "CONSTANT")
o_c5 = layers.general_conv2d(pad_o_c4, 2, f, f, 1, 1, 0.02, "VALID", "c5", do_norm=False, do_relu=False)
return tf.expand_dims(o_c5[...,0], axis=3), tf.expand_dims(o_c5[...,1], axis=3)
def build_decoderc(inputde, name='decoder',skip=False):
with tf.variable_scope(name):
ks = 3
padding = "CONSTANT"
o_c1 = layers.general_conv2d(inputde, ngf * 4, ks, ks, 1, 1, 0.02, "SAME", "c1", norm_type='Ins')
o_r1 = build_resnet_block(o_c1, ngf * 4, "r1", padding, norm_type='Ins')
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2", padding, norm_type='Ins')
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3", padding, norm_type='Ins')
o_r4 = build_resnet_block(o_r3, ngf * 4, "r4", padding, norm_type='Ins')
return o_r4
def discriminator(inputdisc, mask, transition_rate, donorm, name="discriminator"):
with tf.variable_scope(name):
mask = tf.cast(tf.greater_equal(mask, transition_rate), tf.float32)
inputdisc = tf.multiply(inputdisc, mask)
f = 4
padw = 2
pad_input = tf.pad(inputdisc, [[0, 0], [padw, padw], [
padw, padw], [0, 0]], "CONSTANT")
o_c1 = layers.general_conv2d(pad_input, donorm, ndf, f, f, 2, 2,
0.02, "VALID", "c1",
relufactor=0.2)
pad_o_c1 = tf.pad(o_c1, [[0, 0], [padw, padw], [
padw, padw], [0, 0]], "CONSTANT")
o_c2 = layers.general_conv2d(pad_o_c1, donorm, ndf * 2, f, f, 2, 2,
0.02, "VALID", "c2", relufactor=0.2)
pad_o_c2 = tf.pad(o_c2, [[0, 0], [padw, padw], [
padw, padw], [0, 0]], "CONSTANT")
o_c3 = layers.general_conv2d(pad_o_c2, donorm, ndf * 4, f, f, 2, 2,
0.02, "VALID", "c3", relufactor=0.2)
pad_o_c3 = tf.pad(o_c3, [[0, 0], [padw, padw], [
padw, padw], [0, 0]], "CONSTANT")
o_c4 = layers.general_conv2d(pad_o_c3, donorm, ndf * 8, f, f, 1, 1,
0.02, "VALID", "c4", relufactor=0.2)
# o_c4 = tf.multiply(o_c4, mask_4)
pad_o_c4 = tf.pad(o_c4, [[0, 0], [padw, padw], [
padw, padw], [0, 0]], "CONSTANT")
o_c5 = layers.general_conv2d(
pad_o_c4, tf.constant(False, dtype=bool), 1, f, f, 1, 1, 0.02, "VALID", "c5", do_relu=False)
return o_c5
def build_encoderdiffb(inputen, name='encoder', is_training=True, skip=False, keep_rate=0.75):
with tf.variable_scope(name):
fb = 8
k1 = 3
padding = "CONSTANT"
o_c1 = layers.general_conv2d(inputen, fb, 7, 7, 1, 1, 0.01, 'SAME', name="c1", norm_type="Batch", is_training=is_training, keep_rate=keep_rate)
o_r1 = build_resnet_block(o_c1, fb, "r1", padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
out1 = tf.nn.max_pool(o_r1, ksize=[1, 2, 2, 1], strides=[1, 2, 2, 1], padding='SAME')
o_r2 = build_resnet_block_ds(out1, fb, fb*2, "r2", padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
out2 = tf.nn.max_pool(o_r2, ksize=[1, 2, 2, 1], strides=[1, 2, 2, 1], padding='SAME')
o_r3 = build_resnet_block_ds(out2, fb*2, fb*4, 'r3', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r4 = build_resnet_block(o_r3, fb*4, 'r4', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
out3 = tf.nn.max_pool(o_r4, ksize=[1, 2, 2, 1], strides=[1, 2, 2, 1], padding='SAME')
o_c2 = layers.general_conv2d(out3, 32, k1, k1, 1, 1, 0.01, 'SAME', 'c2', norm_type='Batch', is_training=is_training,keep_rate=keep_rate)
o_c3 = layers.general_conv2d(o_c2, 32, k1, k1, 1, 1, 0.01, 'SAME', 'c3', norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
return o_c3
def build_decoder(inputde, inputimg, name='decoder', skip=False):
with tf.variable_scope(name):
f = 7
ks = 3
padding = "CONSTANT"
o_c1 = layers.general_conv2d(inputde, ngf * 4, ks, ks, 1, 1, 0.02, "SAME", "c1", norm_type='Ins')
o_r1 = build_resnet_block(o_c1, ngf * 4, "r1", padding, norm_type='Ins')
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2", padding, norm_type='Ins')
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3", padding, norm_type='Ins')
o_r4 = build_resnet_block(o_r3, ngf * 4, "r4", padding, norm_type='Ins')
o_c3 = layers.general_deconv2d(o_r4, [BATCH_SIZE, 64, 64, ngf * 2], ngf * 2, ks, ks, 2, 2, 0.02, "SAME", "c3", norm_type='Ins')
o_c4 = layers.general_deconv2d(o_c3, [BATCH_SIZE, 128, 128, ngf * 2], ngf * 2, ks, ks, 2, 2, 0.02, "SAME", "c4", norm_type='Ins')
o_c5 = layers.general_deconv2d(o_c4, [BATCH_SIZE, 256, 256, ngf], ngf, ks, ks, 2, 2, 0.02, "SAME", "c5", norm_type='Ins')
o_c6 = layers.general_conv2d(o_c5, 1, f, f, 1, 1, 0.02, "SAME", "c6", do_norm=False, do_relu=False)
if skip is True:
out_gen = tf.nn.tanh(inputimg + o_c6, "t1")
else:
out_gen = tf.nn.tanh(o_c6, "t1")
return out_gen
def build_encoder(inputen, name='encoder', skip=False, is_training=True, keep_rate=0.75):
with tf.variable_scope(name):
fb = 16
k1 = 3
padding = "CONSTANT"
o_c1 = layers.general_conv2d(inputen, fb, 7, 7, 1, 1, 0.01, 'SAME', name="c1", norm_type="Batch", is_training=is_training, keep_rate=keep_rate)
o_r1 = build_resnet_block(o_c1, fb, "r1", padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
out1 = tf.nn.max_pool(o_r1, ksize=[1, 2, 2, 1], strides=[1, 2, 2, 1], padding='SAME')
o_r2 = build_resnet_block_ds(out1, fb, fb*2, "r2", padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
out2 = tf.nn.max_pool(o_r2, ksize=[1, 2, 2, 1], strides=[1, 2, 2, 1], padding='SAME')
o_r3 = build_resnet_block_ds(out2, fb*2, fb*4, 'r3', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r4 = build_resnet_block(o_r3, fb*4, 'r4', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
out3 = tf.nn.max_pool(o_r4, ksize=[1, 2, 2, 1], strides=[1, 2, 2, 1], padding='SAME')
o_r5 = build_resnet_block_ds(out3, fb*4, fb*8, 'r5', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r6 = build_resnet_block(o_r5, fb*8, 'r6', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r7 = build_resnet_block_ds(o_r6, fb*8, fb*16, 'r7', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r8 = build_resnet_block(o_r7, fb*16, 'r8', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r9 = build_resnet_block(o_r8, fb*16, 'r9', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r10 = build_resnet_block(o_r9, fb * 16, 'r10', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r11 = build_resnet_block_ds(o_r10, fb * 16, fb * 32, 'r11', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_r12 = build_resnet_block(o_r11, fb * 32, 'r12', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_d1 = build_drn_block(o_r12, fb*32, 'd1', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_d2 = build_drn_block(o_d1, fb*32, 'd2', padding, norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
o_c2 = layers.general_conv2d(o_d2, fb*32, k1, k1, 1, 1, 0.01, 'SAME', 'c2', norm_type='Batch', is_training=is_training,keep_rate=keep_rate)
o_c3 = layers.general_conv2d(o_c2, fb*32, k1, k1, 1, 1, 0.01, 'SAME', 'c3', norm_type='Batch', is_training=is_training, keep_rate=keep_rate)
return o_c3
def attention_2(x, ch,name='attention',is_training=True, keep_rate=0.75):
with tf.variable_scope(name):
batch_size, height, width, num_channels = x.get_shape().as_list()
#print("X:",num_channels)
#print("batch_size:", batch_size)
f = layers.general_conv2d(x, ch//8, 1, 1, 1, 1, 0.01, 'SAME', 'f1', norm_type='Batch', is_training=is_training,
keep_rate=keep_rate)#64
f = tf.nn.max_pool(f, ksize=[1, 2, 2, 1], strides=[1, 2, 2, 1], padding='SAME')#32
#print("f:", f.get_shape().as_list())
g = layers.general_conv2d(x, ch//8, 1, 1, 1, 1, 0.01, 'SAME', 'f2', norm_type='Batch', is_training=is_training,
keep_rate=keep_rate)#64
#print("g:", g.get_shape().as_list())
h = layers.general_conv2d(x, ch//2, 1, 1, 1, 1, 0.01, 'SAME', 'f3', norm_type='Batch', is_training=is_training,
keep_rate=keep_rate)
h = tf.nn.max_pool(h, ksize=[1, 2, 2, 1], strides=[1, 2, 2, 1], padding='SAME')
#print("h:", h.get_shape().as_list())
# N = h * w
s = tf.matmul(hw_flatten(g), hw_flatten(f), transpose_b=True) # # [bs, N, N]
beta = tf.nn.softmax(s) # attention map
o = tf.matmul(beta, hw_flatten(h)) # [bs, N, C]
gamma = tf.get_variable("gamma", [1], initializer=tf.constant_initializer(0.0))
o = tf.reshape(o, shape=[tf.shape(x)[0], height, width, num_channels // 2]) # [bs, h, w, C]
#print("0:", o.get_shape().as_list())
# o = tf.nn.conv(o, ch, kernel=1, stride=1, sn=True, scope='attn_conv')
o = layers.general_conv2d(o, ch, 1, 1, 1, 1, 0.01,'VALID', name="f4",norm_type='Batch', do_relu=False, is_training=is_training,
keep_rate=keep_rate)#64
x = gamma * o + x
return x
def build_decodernewb(o_r4, inputimg, name='decoder', skip=False):
with tf.variable_scope(name):
f = 7
ks = 3
o_c3 = layers.general_deconv2d(o_r4, [BATCH_SIZE, 64, 64, ngf * 2], ngf * 2, ks, ks, 2, 2, 0.02, "SAME", "c3", norm_type='Ins')
o_c4 = layers.general_deconv2d(o_c3, [BATCH_SIZE, 128, 128, ngf * 2], ngf * 2, ks, ks, 2, 2, 0.02, "SAME", "c4", norm_type='Ins')
o_c5 = layers.general_deconv2d(o_c4, [BATCH_SIZE, 256, 256, ngf], ngf, ks, ks, 2, 2, 0.02, "SAME", "c5", norm_type='Ins')
o_c6 = layers.general_conv2d(o_c5, 1, f, f, 1, 1, 0.02, "SAME", "c6", do_norm=False, do_relu=False)
if skip is True:
out_gen = tf.nn.tanh(inputimg + o_c6, "t1")
else:
out_gen = tf.nn.tanh(o_c6, "t1")
return out_gen
def build_generator_resnet_9blocks_tf(inputgen, name="generator", skip=False):
with tf.variable_scope(name):
f = 7
ks = 3
padding = "REFLECT"
#tf.pad()只是一种补齐的方式而已：可以参考http://m.blog.csdn.net/zhang_bei_qing/article/details/75090203
pad_input = tf.pad(inputgen, [[0, 0], [ks, ks], [ks, ks], [0, 0]],
padding)
#以下的三层卷积层，主要目的是提取出输入图像的主要特征（编码器）
#图像原输入为[256,256,3]--->[256,256,32]-->[128,128,64]-->[64,64,128]
o_c1 = layers.general_conv2d(pad_input,
ngf,
f,
f,
1,
1,
0.02,
name="c1")
o_c2 = layers.general_conv2d(o_c1, ngf * 2, ks, ks, 2, 2, 0.02, "SAME",
"c2")
o_c3 = layers.general_conv2d(o_c2, ngf * 4, ks, ks, 2, 2, 0.02, "SAME",
"c3")
#以下9层为转换器，这些网络的作用是组合图像的不同相近特性，然后基于这些
#特性，确定如何将图像的特征向量OAenc从DA域转换为DB域的特征向量
#o_r9表示转换层的最终输出，尺寸大小为：[64,64,128]可以看成是DB域中图像的特征向量
"""
build_resnet_block是一个由两个卷积层组成的神经网络层，其中部分输入数据直接添加到输出。
这样做是为了确保先前网络层的输入数据信息直接作用于后面的网络层，使得相应输出与原始输入的偏差缩小，
否则原始图像的特征将不会保留在输出中且输出结果会偏离目标轮廓。在上面也提到，这个任务的一个主要目标是保留原始图像的特征，
如目标的大小和形状，因此残差网络非常适合完成这些转换。
"""
o_r1 = build_resnet_block(o_c3, ngf * 4, "r1", padding)
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2", padding)
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3", padding)
o_r4 = build_resnet_block(o_r3, ngf * 4, "r4", padding)
o_r5 = build_resnet_block(o_r4, ngf * 4, "r5", padding)
o_r6 = build_resnet_block(o_r5, ngf * 4, "r6", padding)
o_r7 = build_resnet_block(o_r6, ngf * 4, "r7", padding)
o_r8 = build_resnet_block(o_r7, ngf * 4, "r8", padding)
o_r9 = build_resnet_block(o_r8, ngf * 4, "r9", padding)
#以下3层为解码器，解码过程与编码方式完全相反，从特征向量中还原出低级特征，
# 这是利用了反卷积层（deconvolution）来完成的
#o_c6为最后的输出[1,256,256,3]
o_c4 = layers.general_deconv2d(o_r9, [BATCH_SIZE, 128, 128, ngf * 2],
ngf * 2, ks, ks, 2, 2, 0.02, "SAME",
"c4")
o_c5 = layers.general_deconv2d(o_c4, [BATCH_SIZE, 256, 256, ngf], ngf,
ks, ks, 2, 2, 0.02, "SAME", "c5")
o_c6 = layers.general_conv2d(o_c5,
IMG_CHANNELS,
f,
f,
1,
1,
0.02,
"SAME",
"c6",
do_norm=False,
do_relu=False)
if skip is True:
out_gen = tf.nn.tanh(inputgen + o_c6, "t1")
else:
out_gen = tf.nn.tanh(o_c6, "t1")
return out_gen
def discriminator(inputdisc, mask, transition_rate, name="discriminator"):
with tf.variable_scope(name):
f = 4
padw = 2
pad_input = tf.pad(inputdisc,
[[0, 0], [padw, padw], [padw, padw], [0, 0]],
"CONSTANT")
o_c1 = layers.general_conv2d(pad_input,
ndf,
f,
f,
2,
2,
0.02,
"VALID",
"c1",
do_norm=False,
relufactor=0.2)
pad_o_c1 = tf.pad(o_c1, [[0, 0], [padw, padw], [padw, padw], [0, 0]],
"CONSTANT")
o_c2 = layers.general_conv2d(pad_o_c1,
ndf * 2,
f,
f,
2,
2,
0.02,
"VALID",
"c2",
relufactor=0.2)
pad_o_c2 = tf.pad(o_c2, [[0, 0], [padw, padw], [padw, padw], [0, 0]],
"CONSTANT")
o_c3 = layers.general_conv2d(pad_o_c2,
ndf * 4,
f,
f,
2,
2,
0.02,
"VALID",
"c3",
relufactor=0.2)
pad_o_c3 = tf.pad(o_c3, [[0, 0], [padw, padw], [padw, padw], [0, 0]],
"CONSTANT")
o_c4 = layers.general_conv2d(pad_o_c3,
ndf * 8,
f,
f,
1,
1,
0.02,
"VALID",
"c4",
relufactor=0.2)
pad_o_c4 = tf.pad(o_c4, [[0, 0], [padw, padw], [padw, padw], [0, 0]],
"CONSTANT")
o_c5 = layers.general_conv2d(pad_o_c4,
1,
f,
f,
1,
1,
0.02,
"VALID",
"c5",
do_norm=False,
do_relu=False)
return o_c5
def build_generator_resnet_9blocks_bis(inputgen,
mask,
transition_rate,
name="generator",
skip=False):
""" Instead of normal convolutions, We make use of [Uhrig et al: Sparsity Invariant CNNs].
However we omit the normalizing factor they use by replaqcing it by 1. This removes the
effect of the bias coming from masked regions in the input.
"""
with tf.variable_scope(name):
f = 7
ks = 3
padding = "CONSTANT"
inputgen = tf.pad(inputgen, [[0, 0], [ks, ks], [ks, ks], [0, 0]],
padding)
mask = tf.pad(mask, [[0, 0], [ks, ks], [ks, ks], [0, 0]], padding)
o_c1, mask = layers.general_partial_conv2d(inputgen,
mask,
tf.constant(False,
dtype=bool),
ngf,
f,
f,
1,
1,
0.02,
name="c1")
o_c1_in = tf.multiply(o_c1, mask)
o_c2, mask = layers.general_partial_conv2d(o_c1_in,
mask,
tf.constant(False,
dtype=bool),
ngf * 2,
ks,
ks,
2,
2,
0.02,
padding='same',
name="c2")
o_c2_in = tf.multiply(o_c2, mask)
o_c3, mask = layers.general_partial_conv2d(o_c2_in,
mask,
tf.constant(False,
dtype=bool),
ngf * 4,
ks,
ks,
2,
2,
0.02,
padding='same',
name="c3")
o_c3_in = tf.multiply(o_c3, mask)
o_r1, mask_r1 = build_partial_resnet_block(o_c3_in, mask, ngf * 4,
"r1")
o_r2, mask_r2 = build_partial_resnet_block(o_r1, mask_r1, ngf * 4,
"r2")
o_r3, mask_r3 = build_partial_resnet_block(o_r2, mask_r2, ngf * 4,
"r3")
o_r4, mask_r4 = build_partial_resnet_block(o_r3, mask_r3, ngf * 4,
"r4")
o_r5, mask_r5 = build_partial_resnet_block(o_r4, mask_r4, ngf * 4,
"r5")
o_r6, mask_r6 = build_partial_resnet_block(o_r5, mask_r5, ngf * 4,
"r6")
o_r7, mask_r7 = build_partial_resnet_block(o_r6, mask_r6, ngf * 4,
"r7")
o_r8, mask_r8 = build_partial_resnet_block(o_r7, mask_r7, ngf * 4,
"r8")
o_r9, mask_r9 = build_partial_resnet_block(o_r8, mask_r8, ngf * 4,
"r9")
o_c4 = layers.general_deconv2d(o_r9, [BATCH_SIZE, 128, 128, ngf * 2],
ngf * 2, ks, ks, 2, 2, 0.02, "SAME",
"c4")
o_c5 = layers.general_deconv2d(o_c4, [BATCH_SIZE, 256, 256, ngf], ngf,
ks, ks, 2, 2, 0.02, "SAME", "c5")
o_c6 = layers.general_conv2d(o_c5,
IMG_CHANNELS,
f,
f,
1,
1,
0.02,
"SAME",
"c6",
do_norm=False,
do_relu=False)
if skip is True:
out_gen = tf.nn.tanh(inputgen + o_c6, "t1")
else:
out_gen = tf.nn.tanh(o_c6, "t1")
return out_gen
def build_generator_resnet_9blocks_bis(inputgen,
mask,
transition_rate,
name="generator",
skip=False):
with tf.variable_scope(name):
f = 7
ks = 3
padding = "CONSTANT"
inputgen = tf.pad(inputgen, [[0, 0], [ks, ks], [ks, ks], [0, 0]],
padding)
mask = tf.pad(mask, [[0, 0], [ks, ks], [ks, ks], [0, 0]], padding)
o_c1, mask = layers.general_partial_conv2d(inputgen,
mask,
tf.constant(False,
dtype=bool),
ngf,
f,
f,
1,
1,
0.02,
name="c1")
# o_c1_in = tf.multiply(o_c1, mask)
o_c2, mask = layers.general_partial_conv2d(o_c1,
mask,
tf.constant(False,
dtype=bool),
ngf * 2,
ks,
ks,
2,
2,
0.02,
padding='same',
name="c2")
# o_c2_in = tf.multiply(o_c2, mask)
o_c3, mask = layers.general_partial_conv2d(o_c2,
mask,
tf.constant(False,
dtype=bool),
ngf * 4,
ks,
ks,
2,
2,
0.02,
padding='same',
name="c3")
# o_c3_in = tf.multiply(o_c3, mask)
#o_r1, mask_r1 = build_partial_resnet_block(o_c3, mask, ngf * 4, "r1")
#o_r2, mask_r2 = build_partial_resnet_block(o_r1, mask_r1, ngf * 4, "r2")
#o_r3, mask_r3 = build_partial_resnet_block(o_r2, mask_r2, ngf * 4, "r3")
#o_r4, mask_r4 = build_partial_resnet_block(o_r3, mask_r3, ngf * 4, "r4")
#o_r5, mask_r5 = build_partial_resnet_block(o_r4, mask_r4, ngf * 4, "r5")
#o_r6, mask_r6 = build_partial_resnet_block(o_r5, mask_r5, ngf * 4, "r6")
#o_r7, mask_r7 = build_partial_resnet_block(o_r6, mask_r6, ngf * 4, "r7")
#o_r8, mask_r8 = build_partial_resnet_block(o_r7, mask_r7, ngf * 4, "r8")
#o_r9, mask_r9 = build_partial_resnet_block(o_r8, mask_r8, ngf * 4, "r9")
o_r1 = build_resnet_block(o_c3, ngf * 4, "r1", padding)
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2", padding)
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3", padding)
o_r4 = build_resnet_block(o_r3, ngf * 4, "r4", padding)
o_r5 = build_resnet_block(o_r4, ngf * 4, "r5", padding)
o_r6 = build_resnet_block(o_r5, ngf * 4, "r6", padding)
o_r7 = build_resnet_block(o_r6, ngf * 4, "r7", padding)
o_r8 = build_resnet_block(o_r7, ngf * 4, "r8", padding)
o_r9 = build_resnet_block(o_r8, ngf * 4, "r9", padding)
o_c4 = layers.general_deconv2d(o_r9, [BATCH_SIZE, 128, 128, ngf * 2],
ngf * 2, ks, ks, 2, 2, 0.02, "SAME",
"c4")
o_c5 = layers.general_deconv2d(o_c4, [BATCH_SIZE, 256, 256, ngf], ngf,
ks, ks, 2, 2, 0.02, "SAME", "c5")
o_c6 = layers.general_conv2d(o_c5,
IMG_CHANNELS,
f,
f,
1,
1,
0.02,
"SAME",
"c6",
do_norm=False,
do_relu=False)
if skip is True:
out_gen = tf.nn.tanh(inputgen + o_c6, "t1")
else:
out_gen = tf.nn.tanh(o_c6, "t1")
return out_gen
def generator(inputA, edges, name="generator"):
f = 5
ks = 3
# padding = "REFLECT"
n_pool = 3
growth_rate = 8
n_layers_per_block = [2, 2, 2, 2, 2, 2, 2]
with tf.variable_scope(name):
n_filters = ngf
# skip_connection_list = []
o_c1 = layers.general_conv2d(inputA,
ngf,
f,
f,
1,
1,
0.02,
name="c1",
padding="SAME")
o_c2 = layers.general_conv2d(o_c1, ngf, ks, ks, 1, 1, 0.02, "SAME",
"c2")
o_c3 = layers.general_conv2d(o_c2, ngf, ks, ks, 1, 1, 0.02, "SAME",
"c3")
o_c4 = layers.general_deconv2d(o_c3, ngf, ks, ks, 2, 2, 0.02, "SAME",
"c4")
o_c4_1 = layers.general_conv2d(o_c4, ngf, ks, ks, 1, 1, 0.02, "SAME",
"c4_1")
o_c5 = layers.general_deconv2d(o_c4_1, ngf, ks, ks, 2, 2, 0.02, "SAME",
"c5")
o_c5_1 = layers.general_conv2d(o_c5, ngf, ks, ks, 1, 1, 0.02, "SAME",
"c5_1")
o_c6 = layers.general_deconv2d(o_c5_1, ngf * 2, ks, ks, 2, 2, 0.02,
"SAME", "c6")
stack = slim.conv2d(
o_c6,
ngf, [3, 3],
padding='SAME',
activation_fn=tf.nn.leaky_relu,
weights_initializer=tf.contrib.layers.variance_scaling_initializer(
factor=2.0, mode='FAN_IN', uniform=False))
stack, _ = DenseBlock(stack,
n_layers_per_block[0],
growth_rate,
scope='denseblock%d' % (1))
n_filters += growth_rate * n_layers_per_block[0]
out1 = tf.tile(tf.expand_dims(edges[:, :, :, 1], 3), [1, 1, 1, 48])
stack = tf.add(stack, out1)
stack, _ = DenseBlock(stack,
n_layers_per_block[1],
growth_rate,
scope='denseblock%d' % (2))
n_filters += growth_rate * n_layers_per_block[1]
out2 = tf.tile(tf.expand_dims(edges[:, :, :, 2], 3), [1, 1, 1, 64])
stack = tf.add(stack, out2)
stack, _ = DenseBlock(stack,
n_layers_per_block[2],
growth_rate,
scope='denseblock%d' % (3))
n_filters += growth_rate * n_layers_per_block[1]
stack, _ = DenseBlock(stack,
n_layers_per_block[n_pool],
growth_rate,
scope='denseblock%d' % (n_pool + 1))
out3 = tf.tile(tf.expand_dims(edges[:, :, :, 3], 3), [1, 1, 1, 96])
stack = tf.add(stack, out3)
stack, _ = DenseBlock(stack,
n_layers_per_block[n_pool + 1],
growth_rate,
scope='denseblock%d' % (n_pool + 2))
out4 = tf.tile(tf.expand_dims(edges[:, :, :, 4], 3), [1, 1, 1, 112])
stack = tf.add(stack, out4)
stack, _ = DenseBlock(stack,
n_layers_per_block[n_pool + 2],
growth_rate,
scope='denseblock%d' % (n_pool + 3))
out5 = tf.tile(tf.expand_dims(edges[:, :, :, 5], 3), [1, 1, 1, 128])
stack = tf.add(stack, out5)
stack, _ = DenseBlock(stack,
n_layers_per_block[n_pool + 3],
growth_rate,
scope='denseblock%d' % (n_pool + 4))
net = tf.nn.tanh(
layers.general_conv2d(stack,
1,
3,
3,
1,
1,
0.02,
"SAME",
"c6",
do_norm=False,
do_relu=False))
net = (net + tf.image.resize_images(
inputA, tf.shape(net)[1:3], align_corners=True)) / 2.0
return net
def denseNet(inputgen,
gen_type,
name="generator",
preset_model='FC-DenseNet56',
n_filters_first_conv=32,
n_pool=1,
growth_rate=2,
n_layers_per_block=3):
if preset_model == 'FC-DenseNet56':
n_pool = 5
growth_rate = 12
n_layers_per_block = 4
elif preset_model == 'FC-DenseNet67':
n_pool = 5
growth_rate = 16
n_layers_per_block = 5
elif preset_model == 'FC-DenseNet103':
n_pool = 5
growth_rate = 16
n_layers_per_block = [4, 5, 7, 10, 12, 15, 12, 10, 7, 5, 4]
else:
raise ValueError(
"Unsupported FC-DenseNet model '%s'. This function only supports FC-DenseNet56, FC-DenseNet67, and FC-DenseNet103"
% (preset_model))
with tf.variable_scope(name):
if type(n_layers_per_block) == list:
assert (len(n_layers_per_block) == 2 * n_pool + 1)
elif type(n_layers_per_block) == int:
n_layers_per_block = [n_layers_per_block] * (2 * n_pool + 1)
else:
raise ValueError
#stack = slim.conv2d(inputgen, n_filters_first_conv, [7, 7], scope='first_conv', activation_fn=None)
pad_input = tf.pad(inputgen, [[0, 0], [3, 3], [3, 3], [0, 0]],
"REFLECT")
stack = layers.general_conv2d(inputgen, ngf, 7, 7, 1, 1, 0.02, "SAME",
"c1")
#stack = layers.general_conv2d(stack, ngf * 2, 3, 3, 1, 1, 0.02, "SAME", "c2")
n_filters = ngf
skip_connection_list = []
for i in range(n_pool):
stack, _ = DenseBlock(stack,
n_layers_per_block[i],
growth_rate,
scope='denseblock%d' % (i + 1))
n_filters += growth_rate * n_layers_per_block[i]
skip_connection_list.append(stack)
stack = TransitionDown(stack,
n_filters,
scope='transitiondown%d' % (i + 1))
skip_connection_list = skip_connection_list[::-1]
stack, block_to_upsample = DenseBlock(stack,
n_layers_per_block[n_pool],
growth_rate,
scope='denseblock%d' %
(n_pool + 1))
for i in range(n_pool):
n_filters_keep = growth_rate * n_layers_per_block[n_pool + i]
stack = TransitionUp(block_to_upsample,
skip_connection_list[i],
n_filters_keep,
scope='transitionup%d' % (n_pool + i + 1))
stack, block_to_upsample = DenseBlock(
stack,
n_layers_per_block[n_pool + i + 1],
growth_rate,
scope='denseblock%d' % (n_pool + i + 2))
o_c3 = layers.general_conv2d(stack, ngf * 4, 1, 1, 1, 1, 0.02, "SAME",
"c3")
o_r1 = tf.nn.relu(
build_resnet_block(o_c3, ngf * 4, "r1", padding="REFLECT"))
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2", padding="REFLECT")
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3", padding="REFLECT")
if gen_type == 'A':
out_layers = IMG_CHANNELS
elif gen_type == 'B':
out_layers = IMG_CHANNELS + 1
net = tf.nn.tanh(
layers.general_conv2d(o_r3,
out_layers,
3,
3,
1,
1,
0.02,
"SAME",
"c6",
do_norm=False,
do_relu=False))
return net
def dehaze_resize_with_deconv(inputgen, name="generator", skip=False):
with tf.variable_scope(name):
f = 7
ks = 3
padding = "REFLECT"
pad_input = tf.pad(inputgen, [[0, 0], [ks, ks], [ks, ks], [0, 0]],
padding)
o_c1 = layers.general_conv2d(pad_input,
ngf,
f,
f,
1,
1,
0.02,
name="c1",
relufactor=0.2) #256*256*32
o_c2 = layers.general_conv2d(o_c1,
ngf * 2,
ks,
ks,
2,
2,
0.02,
"SAME",
"c2",
relufactor=0.2) #128*128*64
o_c3 = layers.general_conv2d(o_c2,
ngf * 4,
ks,
ks,
2,
2,
0.02,
"SAME",
"c3",
relufactor=0.2) #64*64*128
o_r1 = build_resnet_block(o_c3, ngf * 4, "r1", padding) #64*64*128
o_r2 = build_resnet_block(o_r1, ngf * 4, "r2", padding)
o_r3 = build_resnet_block(o_r2, ngf * 4, "r3", padding)
o_r4 = build_resnet_block(o_r3, ngf * 4, "r4", padding)
o_r5 = build_resnet_block(o_r4, ngf * 4, "r5", padding)
o_r6 = build_resnet_block(o_r5, ngf * 4, "r6", padding)
o_r7 = build_resnet_block(o_r6, ngf * 4, "r7", padding)
o_r8 = build_resnet_block(o_r7, ngf * 4, "r8", padding)
o_r9 = build_resnet_block(o_r8, ngf * 4, "r9", padding)
with tf.variable_scope("resize_conv1"):
o_c4_0 = tf.concat([o_r9, o_c3], 3)
o_c4_1 = layers.instance_norm(o_c4_0)
o_c4_1 = layers.deconv2d_resize(o_c4_1,
ngf * 4,
kernel=ks,
stride=(2, 2),
name='deconv_1')
o_c4_1 = layers.lrelu(o_c4_1)
o_c4_2 = layers.general_deconv2d(o_c4_0,
[BATCH_SIZE, 128, 128, ngf * 2],
ngf * 2, ks, ks, 2, 2, 0.02,
"SAME", "c4")
o_c4_3 = tf.concat([o_c4_1, o_c4_2], 3)
o_c4_4 = layers.one_conv(o_c4_3, 64)
o_c4_4 = layers.lrelu(o_c4_4)
with tf.variable_scope("resize_conv2"):
o_c5_0 = tf.concat([o_c2, o_c4_4], 3)
o_c5 = layers.instance_norm(o_c5_0)
o_c5_1 = layers.deconv2d_resize(o_c5,
ngf * 2,
kernel=ks,
stride=(2, 2),
name='deconv_2')
o_c5_1 = layers.lrelu(o_c5_1)
o_c5_2 = layers.general_deconv2d(o_c5_0,
[BATCH_SIZE, 256, 256, ngf], ngf,
ks, ks, 2, 2, 0.02, "SAME", "c5")
o_c5_3 = tf.concat([o_c5_1, o_c5_2], 3)
o_c5_4 = layers.one_conv(o_c5_3, 32)
o_c5_4 = layers.lrelu(o_c5_4)
with tf.variable_scope("Output_layer"):
# o_c6_0 = tf.concat([o_c5_1, o_c5_2],3)
o_c6 = layers.general_conv2d(o_c5_4,
IMG_CHANNELS,
f,
f,
1,
1,
0.02,
"SAME",
"c6",
do_norm=False,
do_relu=False)
if skip is True:
out_gen = tf.nn.tanh(inputgen + o_c6, "t1")
else:
out_gen = tf.nn.tanh(o_c6, "t1")
return out_gen